Hello GRM. You may remember me from my 96 Century build thread. Flush with my minor success of transplanting a 60 degree V6 into my 60 degree V6-powered car, I've gone off the deep end. I am currently in the very preliminary theory and planning stages of a front to rear drive conversion.
The car in question:
If it looks familiar, that's because it is! This is a 1993 Buick Century Custom wagon (not unlike my '96) I picked up off of craigslist back in August 2015 for essentially scrap value ($200). I didn't really know what I wanted to do with it at the time, aside from parts car status, but in the intervening year and a half, a terrible plan began forming within me. A plan of a stripped out, clapped out troll machine, smoking the too-narrow rear tires when it should be doing that to the front.
Here's what I have so far. I want to make this car rear wheel drive, with some variety of LS (probably a mildly cammed 4.8L truck engine) and a 4L60E automatic. My brother is willing to donate the rear axle from his 2001 Z28 (3.42 posi, though I will probably have it rebuilt to 3.23) once he gets a hold of a Moser 12 bolt for himself. After looking at the Century's torsion beam and the Camaro's live axle, it seems like I could probably swap over the Century's shock and spring mounting points to the Camaro axle to attempt to keep the rear suspension geometry, such as it is, in the stock location.
Lots of cutting of the body will be necessary to make room for the transmission and driveshaft. I am not worried about this, because as I said, I paid almost nothing for this car, and it was a rolling dumpster fire in the first place. I am unconcerned with possibly irrevocably ruining this chassis. If I do, oh well, off to the recycler, and hopefully some lessons learned about what not to do.
A fuel cell is in the cards, since the stock fuel tank wants to occupy the same space as a theoretical driveshaft. Not sure on what size to use, but a 15 gallon keeps jumping out at me on ebay for not too big of a price. Probably mounted inside the rear of the cabin where kids would put their feet when seated in the third seat. In a cage. Or something.
I am not planning to make this look stock, like I did to my '96. This will have no interior aside from a driver's seat and some gauges somewhere, and some of the stock carpet to keep any stray pebbles tracked in from rattling on the bare metal floor.
Where it gets a little fuzzy is up front. I think the Century's stock struts and knuckles may be okay to reuse, since I don't plan on this being anything other than a straight line vehicle. I'm not really sure yet what to do about the steering rack and how to modify the subframe to allow the transmission to mount up to the body. F-body seems like the way to go, maybe even with an F-body column. After that, I don't know how I would mate the rack to the knuckles and keep some semblance of stability.
Any suggestions would be appreciated!
EDIT: To pre-empt anyone who might say it simply can't be done:
That is a Cutlass Ciera, the sister car to my Century, doing a wheel stand. I haven't found any build information yet, but I'm told it is a stock body, not a silhouette car (that is, a tube chassis).
DO IT NOW!!! Berk all the naysayers and if you can put up with him, bring pop on board ! 
