Put a Passon in & forget about it. I did & I'm 110% happy with it in my 69 Bee with 4:10's. Went from 3200rpm to 2300 SWEET!!! 511 inch & 8 3/4 here. Car looks bone stock with 26" Goodyear PolyGlas tires but boy does it whip the pants off a lot of other Mopar & non Mopar cars!!!LOL
Just ask the guy at Carlisle a few years ago that sells the StageV Hemi conversion heads. smoked him like he was going backwards just east of the Breezewood interchange on the Pa. turnpike. Saw him at the show later & he had the valve covers off of it. I ask what was up & he said he bent some pushrods trying to run a car on the way there. I ask him if it was a Yellow 69 Bee & he said yeah. I laughed & said if he wanted to try on the way home to let me know as I was heading home Sunday at around 4pm. LOL Told him it was a slightly warmed over 383 with a .528 solid lifter cam. He came to the stock 69 B-Body class later & just couldn't get over being beat by a 383. I never did tell him.