I would say stick with the t34, with a 48 housin, keepin the 48 housin the turbo spools up lower down the rev range, bout 3200rpm helpin when ur on n off the power, im runnin a t34 with a 63 housin it comes in so much later in the rev range bout 3800rpm and it comes on boost really hard, so not the best 4 what u r after, i havent ever driven a t34 with a 55 housin so cant really coment on how they drive