So i just swapped in a 2.9l EFI, i had a Carb.

Im still new two the whole EFI suff, and i still have a few buggs to work out of the 2.9l EFI
so im wondering if i can run propane with my EFI?

My problem is this:
When im at 6k and above altitudes my engine runs like sheat. no POWER, i might as well get out and push.

I was thinking maybe a propane setup would solve this? am i wrong?

Whats the cost ivolved in seting up a 2.9 EFI for Propane and are the results worth it?