[blykins]

You'll have to weigh your options...

I wouldn't trust a stock T5 to last very long behind a good running 347. Shoot, they will break behind a 302 in a Fox Mustang.

You can go a couple of ways...

1. Upgrade the parts in the T5 beyond the T5Z that's available. There are modifications that you can do to upgrade a T5 to 400 and 500hp ratings.

2. Upgrade to a TKO 500 for about $2000.

Do you know how much horsepower you're making? Do you plan to put the car on the track, or is it street only? Do you want to put a lot of money into the car? A TKO would probably raise the resale value of the car.

Just some thoughts...