hello build another engine with STD CASES side winder stoker 89 inch 9;1 pistons,port&polish the heads, chrome molly push rods, 4N ANDREWS CAMS, Harden lighting 4 speed gear box, go with H4crane ingtion, put a screamin eagle jet kit in your Cv carberator, use your stock pipes mre back pressure top speed 150MPH. I ove this engine 112,000 miles in 2 years it uns like clock,if yourenot into racing aroundand just putt n this engine ges 70 mpg !