Had a buddy of mine take a look at it and he had a pressure tester he checked the radiator and no leaks found.. hes starting to think I have a thermostat going bad because the fans kick on and off when they're supposed too

Its weird because I'm having to add coolant at times he doesn't think it's a head gasket but I would still like an overall diagnostic done.

Any shops you can recommend? That can possibly also swap out engines and trannys in my vehicle and I'm trying to also convert my 4 lug to 5 lug but the proper way cause as it sits I can only use wheels that have 4 x 114.3 I would like to switch to a legit 5 lug setup..

Like If I do get it checked and they find something whatever I spend on the diagnostic hopefully they can remove that from whatever costs may arise

Thanks!