Hitting that balance between HP and economy is the trick. If you are just throwing a cam into it, I would head for something like the Lunati 20200217.... it has a pretty good lift/duration ratio. Put it right in and not worry about too much lift on stock heads, keep the economy up reasonably with a modest boost in performance. Depending on the heads you will have, you're starting in the low CR corner of the performance map so it is easy to over do it and get into the 'pig mode'.... The head type (like maybe 302's??) would be good to know. That one will put your DCR in the low 7 range with that cam if you are near sea level. (Make sure you don't get the truck pistons in the block with the pistons waaaay down in the hole.... not sure they were still using those in '91.)
The 'wavy' term as applied to your car's body panels is interesting LOL