Matt,
I think I have a way for you to decide which trans to go with.
Obviously your car is not a D.D., but you will take it out for the occasional cruise or late night runs
..(if u want to play w/the big boys,lol) so there is 2 ways I would go about this.
Turbo 400 w/3:08's :
Cheaper & more available parts/build labor
no harness & tuning to deal with (shift points,line pressure, etc.. for the nitpickers)
less modifications to chassis
overall easy of install
3spd but will run down GSP with ease & will rip around town
4L80E w/ 3:50's :
More expensive to build parts/labor
wiring of harness & tuning the ecm for shift points,line pressure, etc..
possible failure of solenoids internally
modifications to chassis
less room for custom exhaust routing
more difficult of an install, more down time due to wiring tuning etc..
4spd and can run down GSP @ 90 (allthough not for long til popo write you)
I personally would go the 400 route due to it being cheaper & less involved and being that your car is not a D.D..
If you plan on driving it to florida than maybe you should go w/4L80E and mite as well toss in a LS motor while your at it for reliability and some real HP..
