im 90% through a engine rererebuild, could be done now but im lazy and take my time. I have gt2560R turbos that spool up insanly quick, they are basically the biggest(60r) of the smallest(gt25). my heads are NOT ported to fully take advantage of the MS manis only have a 5 angle valve job. Was making an estimated 450-480 WHP previously. Would $1100 MS really benifit such an already spooly turbo.
what i do with my car = SCCA solo and QT runs every other month
or should i do before and after results to get some hard core results on these manis