Screw the ABA swap. Make mine a 16V every time....Oh wait. I did!
Even the lowly 1.8 16V out performs the ABA, A 2 liter 16V in an A1 Chassis will demolish an ABA swapped car.
ABA's are cheap and plentiful but the passat 16V unit is almost as cheap. It has plenty of torque and makes 20hp over the aba.
I yanked an overheated 1.6 diesel out of the above caddy and installed a 1.9 16V with Megasquirt, a TT race downpipe and full exhaust and not much else and laid down 156hp on a Dynojet. I have never seen an ABA come anywhere close to that number.
16V's like boost too. Every local 16V makes more hp than the 20V's at the same psi. Want more? Install the forged 1.8T pistons in the 1.8 16V turn up the boost and make 300 at the wheel and never have traction.