See Chris that's what I thought, but ater reading the psotings of quite a few messge boards ont he TransGo shift kit for our tranny(specifically the CD4E.. like the on e used in the 626 and probes(not the 4EAT one)) they said it basically just firmed up the shifts on trannies that had been showing some wear.. so I dont know what it will do on a perfectly good tranny..
I know there are sno spring or valve changes in the kit(ie to increase line pressure to the OD unit, or anything like that..).. so who knows..
Then I came across that gentleman who works on the SHO kits, and he worked ith TransGo themselves to develop the performance shift kit for their trannies..
just thought I'd mention it..