Any tips or ideas?

[Caseman]

Ok so i got the monster pump and a set of his 6x16 injectors a couple weeks ago. So i go to a pull and i was taking off the line and break the output shaft on the transfer case. Its a dld. So i get it fixed the next day and pull it again that night and it breaks the same thing. So i got the 271 and got it put in the other day and im getting my driveshaft shortned tomorrow. Im thinking im around 650hp and 1400fptq. I got 3:55 gears. Ive been launching in 4th 4low. Im running toyo mts that are about 3/4 tread. Im pulling this weekend again. Do you guys think ill be alright in 4th or do i need to go down to 3rd? Im also running a 64/71/12 turbo. I just cant afford to keep breakin this thing all the time and was wondering if i should be alright. I pretty much got everthing bulletproof. The only thing that worries me is an axle breaking. You guys think ill be alright in 4th 4low? Sorry for the long post.

 

[Caseman]

Im also thinking about running my stock wheels and tires which are 285s and the firestone destination ats. what do you guys think? any input appreciated?

 

[kipo]

what size are the toyo's. I'd say if your worried about breaking put the stockers back on and stayin 4th.

 

[Caseman]

toyos are 295/70/17. I think im just going to put the stockers back on so i dont have to worry about getting to much traction and breaking stuff.