the car has 105,000 miles on the stock 5 speed tranny, im looking into buying an SI tranny to put into it but looking for suggestions and opinions...thanks

I'd suggest just buying a newer used d16y8 tranny. Not to hard to come by pretty cheap, if someone you know is doing a swap.
Putting out over 300whp on my d16Y8 tranny and it's hold up ok so far but I keep a spare just in case :D