not another cam question!!

I'd call one of the good cam grinders and have a custom cam ground. Many times custom grinds cost nearly the same as an off the shelf cam nowadays. I've used Racer Brown with great results. There are other great companies out there too. I put a custom ground Bullet cam in a 418 for a buddy and it runs fantastic.

Also you might consider going easier with the juice since you say it's all stock internals. If the tune is right on it's not quite as bad but if your off much it plays havoc on things and 150 shot on a stock engine is a pretty hefty hit