damn you have you not read anyting on this site b4 you purchase
ok ill let you on a few little secrets
*if you dont plan on running aftermarket heads then sell you TB and use the stock on
*70mm tb is only good for motors with heads/intake/larger cams..if you try to use it on a stock motor you will loose down low and you wont be able to make it up top cuz the reast of the induction system wont benifet from it..belive me..i go mid 11's with a stock TB(high 12's on street tires off he juice)
*i would not use a 70mm TB on the cobra unless it was ported out..it wasnt meant to flow that much air IMO
*if you wanna go fast ten forget the intake for now and grab a set of heads(i had luck with the ederbrock 6037's or AFR 165's), and grab a b-303 w/ 1.7 RR and retain the stock intake but give the lower intake a good home porting and get ready to kill alot of cars with a very stock looking motor
*IMO i would never buy a set of shorties agina..go with long tubes...makes more power all around but is a little more of a pain to install(h-pipe is easier though with longtubes)
*i just tore a 70mmtb off my buddies car the other day(it came with one when he bought it) and put back on a stock one..car was much much more responsive and did not loose any up top..his only mods were ederbrock intake, exhaust, gears..in fact on the mid 11 car i spoke of up top it runs slower when we swapped on a 70mm TB..so if you tell us your budget we can point you in the right direction