The best way to add a M1 is to have a cam. But I have 1.7 lift rockers and port & polished heads. So I should be fine. The B&G flash works best when incorporated in use with a R/T cam and R/T heads. But on the line of forced induction, I don't know if I need to have the M1 ported and polished.

 

I tow a 33 foot travel trailer, dry weight is 5000 lbs. Its a Trail Cruiser 30BQSS. I have a good weight dist hitch and prodigy brake controll. I never tow in OD. No issues.