I'm in the process of fitting a Garett GT2871R dual ball bearing turbo to my Escort Cosworth. We had a little set back in tuning (Autronic SMC with 550 cc/min injectors) but should be finished soon. This turbo is good for up to 400hp and spools up much fatser than the T35 with a .48 housing (my previous turbo). For the small tracks and autocross events I do here in Montana the T35 was just too laggy.