I'm thinking about getting a doubler for my 89, the 92 Blazer from Eastcoast isn't panning out, which already had the doubler in it. I can get a 203, pretty sure an adaptor, but the trans I have is 2wd. I had 2" spacer made (MEK5) so I could use a 208/241 adaptor with a Ford 205. Looks like the factory 400/203 used a really short output, but where would the spacer have to go?? Or do I even need a doubler?? But it would be cool....