Can I use this TT kit?
 

Wondering if I can use this TT kit on stock internals:

GReddy

or would I need to spend more cash on upgrading internals? And also, how would the stock 7sp Auto gearbox handle 435-500 whp?

Will I be asking for trouble or will it be ok.

Has anyone on these forums used these kits, or are there better ones available at similar price?

Look in the Forced Induction section, there is tons of information on this.

This.

That having been said, the 7AT doesn't really like the torque once you get above 400ft lbs. Especially in 5th-7th gear, you'll start losing them. I would recommend a transmission cooler, valve body upgrade, and a built tranny with extra clutch packs if you plan on boosting the 7AT. Look at Level 10 stuff. I believe Fast Intentions is also building 7AT transmissions now with some of their TT kits, you may call them and talk to them about the options.

As per the kit itself, do your research. Most people here use BP, AAM, or FI kits. Or other companies, which shall not be named. The forum is full of helpful info.

I used that kit and made 670rwhp on the stock engine.

But I had a manual trans, not 7AT.

That turbo kit is either entirely discontinued or they stopped importing it to the USA. I heard discontinued, but some sources claim to be able to purchase it in Japan which may or may not be accurate.

GREDDY is still advertising it on their website, but you cannot purchase it from their online store. Just use due diligence when making your purchase through a company, if you decide to go that route!