700r Lock up kit

[kiles2001]

Hello all

I am currently going to swap out my th350 for a 700r-4, I have looked at several lock up kits and I think I will go with the pressure switch kit, I was wondering if anyone knows what kind of switch it is? I would like to buy the parts myself and save a few bucks, it looks pretty straight forward and would hate to shell out $100 bucks when I could do it for half of that, also do I have to make any modifications to the inside wiring of my tranny? it is out of 1990 camaro, any and all replies are appreciated...