^^^These...
It's funny, I just took my 88 today with this Blue Print short block, my own heads and running TBI still. I was having so much fun smoking my one wheel peel 275R/60 tires at part throttle
After rebuilding/modifying 2 350s with flat tappet and roller cams I'll never go back - it's just too much fun but, I'll need to get a locker or some kind of posi for it - maybe even wider tires too
One thing I know - I'll NEVER RUN A FLAT TAPPET cam again!
Description: Horsepower & Torque: 436 Horsepower / 443 FT LBS Compression Ratio: 10.0:1 Hypereutectic Pistons Cast Steel Crank Block: 4 Bolt Main 4.00'' Bore Passenger Side Dipstick Align Honed on Computer-Controlled Machine to Within .0002 Straightness and Roundness Cylinders are Sonic Tested...
blueprintengines.com
They have long blocks on this site too...