Ive got the 975 on my 03.5 with Jaws D pipes and front dump can, peak head etc. etc.. Runs really good. im currently in the process of removing the timming advance key and twins and installing a turbo. i figure between the 975 and 10#'s of boost aught to be good.
Terra alps 975, jaws d, v-force, case and cylinder porting, heads cut 14-1, timing 3 degree, carbs bored 2mm, forward post, larger recoil. love this sled, awesome bottom end and midrange. going to increase base plate thickness to raise port timing. run with any mod m1000.