360 compression and cam questions

The XE 284 is in our 360 Duster. We are at 4000 ft , power brakes and A/C works perfect with a very healthy sound at idle. 388dart, I shared your concerns on streetability of this cam also in the 360 as I did use it in the 408 for some time. When I changed to a mechanical in the 408, the XE284 and the 9 1/2' converter were hand me downs to the fresh 360 in our other Duster. If Joseph has enough converter and gears the 284 is awesome. If not, the 274 would be wise.