Need to replace the spark plugs in my Cutlass. Its a 71 but has a 70 350 4bbl sbo in it. The dist. has been changed to a HEI. Motor was rebuilt 9000 miles ago to stock specs except for intake and carb which are edelbrock. What plugs would you all suggest I put in it.

 

I like autolites myself.
Gap at .040-.045"
No more than that.
Jim