Anybody wanna guinea pig that pulley? Don't look at "I".

My concerns....

Proven on a 2.7L Tiburon.... I simply can't take someone's word for it when it isn't in writing (the website doesn't list a 3.5L VehiCROSS, so they will not be responsible). And to be honest, I don't know what the load bearing is on the existing Alpine unit. Could be that 5psi is at or close to the limit, considering the bearing issues it is prone to. And remember, Alpine didn't even offer the 5psi until just before they were discontinued. Anybody who is considering a swap, I would consider the consequences first.

I will guarantee the boost, but for how long before issues arise?

An all new S/C unit is the best option if you ask me. Something with better internals and not some damned nylon bearings.

Just some thoughts I have had on the issue.