383 Rev Limit question

When I pull the engine and start figuring out how it was built I will find out if I can go with the 1.6 rockers or just stay with a 1.5.

I want the car to be streetable but not for long driving just local things here and there, maybe 500-1000 mile a year and to be a strip car. Right now its set up for the strip with 28x 10.5 MT slicks and 4 inch front tires both on weld rims. I plan to get a set of street tires and rims for anything local.

i cant wait to have time to pull the engine just to see what I am dealing with.