under the hood I am going to put the little Die hard platinum p1 group 34, in back I think I am going to use the same make but a big p2, but I'll have to get back to you I guess so I can look at it tomorrow, I can measure the post size exactly to eliminate any guess work. I am still up in the air about staying in stock 3 or going no wall next year so that will determine how many batts I can use. If I go nowall i'll be able to have more then 3 so I might have to go with battcap 3000 (or is it 2000 can't rem.) to save weight in my little car, cuz its my daily driver. I'm not making this easy for you huh, maybe you can give me a ball park for a set and I'll just exspect it to be more or give me a price for the p1 bars as that is def. going under my hood cuz I already own it and its in great shape. Thanks, will get the measurements to you asap.