Nice times, but if it took you 5 trannies to get to a 12.5, you need to put a stock turbo back on, and keep it a fun daily. Seriously, I would help you find a more suitable platform.
Just as an example, with a 110% bone stock motor, turbo, everything (dyno;d 210whp, 230ft lbs) with full interior and amenities, I went 12.7@110 in my Colt. An intercooler, injectors, and AFC got me consistent 12.0's at 119. I NEVER broke a tranny, until I was making over 700whp. then I ripped the input shaft off once, and only once, in over a year of daily flogging.
Im not saying go Colt, Im not saying dump the VDub, Im just saying research your options before ypu go drop a bunch of cash on a Dogbox for a 12 second car. You hang out with a lot of fast people, with a lot of good advise to give...