I'm almost done with my swap from a 7.5, check out the info and pics under the construction projects to see what kind of project it turns into. Originally purchased an expo rear with discs for $200 and throw in an additional $250 or so to make it work.

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87 Ranger
5.0 (306) from worn out gt mustang
Exploder 31 spline tracloc,linelockin 3:55 rear w/discs
S & R Customs in the works...

PNW Crew...