4 Link vs Spring Relocation? Pros/Cons?

Great examples, also your duster looks great! Are you running a squared set up?

Would 300-350HP not be enough to move 295s? I know I'll need more power to control them. I'm sure running a 295 on this will be overkill, but like I said I really like the staggered/wider rear styling.

Nope, not running square. I run 275/35/18's in the front, 295/35/18's in the back. 275 is about the limit for the front unless you really start making irreversible changes to the front fenders. Tomswheels runs 285's up front, but he also pushed his fenders out with a porta-power.

295's for 300-350 hp would definitely be overkill, but I don't think you should have a problem moving them. You probably won't be spinning them much though if you're gear ratio's are set up for the street. ;-)

72blu, ,love the wheels, tires and stance.

Thanks! They're Enkei RPF1's, 18x9 with 275/35/18's up front with ~27mm of effective offset (after a 3mm spacer and Dr. Diff 13" rotors), 18x10's out back with 295/35/18's and 38mm of offset with a 68-70 B body 8 3/4 and a 1/2" spring hanger/shackle offset.