4 speed versus auto- which one?

HOW MUCH HARDER On parTs?8 1/4 snAPPED AXEL,8 3/4 MULCHED CONE TYPE 4.10,U-JOINTS.mind you this is behind 340 stroked(372)452hp.also have centerforce clutch and lakewood bell. scattershield.best run was 12.8 at 108mph it should be in low 12,s.more tinkering and experience,i.ll get there.It,s nice 2 be different than everybody else!

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