im thinking about getting the street brawler t3/t4 turbo kit but im also trying to look for other similar turbos... i want sumthing that spools fast but that can boost hight psi. and keep boosting strong all the way till redline. is the t3/t4 kit the best for this or is there other kits that mite be better for what im looking for? also whether i get the t3/t4 kit or any other kit... should i go for the 45 trim or the 50 trim? is one for low end power and one for high end, whats the difference between these 2?