Anybody have a rebuildable core? Thanks

Hope you have good luck in finding one. Most have been scooped up for marine and other applications other than over the road.

They were also used in postal jeeps

All good. Have a low mile running 151 Iron Duke with T4 tranny and then a low hour running 181 Mercruiser for backup. Thanks Happy Holidays

The Chevy II 4 Cyl. and the Pontiac Iron Duke are related but not the same engine.

Good luck finding that needle in a hey-stack motor. I had a 64 Chevy II (194) for 37 years (sold it) and also was on the hunt for a Chevy 153 complete motor for 15 or so years with NO luck at all. I was going to mate the 153 and a 4L60 (700r4) trans and see just how much MPG I could get out of my Chevy II. I since then moved on and sold the Chevy II and started a sort of "Dirty" ground up restoration for my 68 C10 SBC, 4L60 over drive.trans.truck.