..well i had an lt1 befor my cobra. i ran 13.20 @105 with 323 gears. built trans. 2500 stall. mid length headers, or ypipe. 3inch catback.b/p t/b. homemade cai. bone stock dyno was 245 rwhp and 301 rwtq out of an auto. with cheap gas as those cars require premium or the km pick up know and was...