Jim, they ALL (nine of them and counting) have offered great deals on rebuilding my block, with pretty reasonable pick-up and delivery rates right to the house. Most of them are out of Pontiac V-8 cores at the moment.
They say the last two years have seen increased demand by 300 percent. That should be good news for us Pontiac owners I suppose.
Warranties range from 3 to 7 years. Two even have the HO package which meets or exceeds to original '68 400 standards.
I'm having alot of fun researching these companies, and have learned a bit of the trade as well.
'68 428 HO M3 Monster, 4-on-the-floor! Need I say more?