How will the 4L65E (stock) deal with this? thanks

 

I would think it should hold up alot better then the stock 60. I would still do a shift kit and servos in it just to help it out a lil better. form what i have gatherd the 65e is supposed to be 20% stronger then the 60 is.. Good luck

 

should be fine.... You might want to add 1-2 and 3-4 servo's just for some added protection.