If you do the thermostat yourself (recommended because it is really easy), it will only cost around $10 to do. I live in Minnesota and I am running the 180 and it works great. It heats up just fine and maintains 175-180 on the temp gauge in the winter. I haven't had a chance to run it in 90+ degree days but I am sure it will help alot there too.

on our Arizona highways in the summer, my temp still gets up to around 220.

Your thermostat probably never gets the chance to close when the car gets hot. It'll just climb right up there at that point.

This is where the extra tranny cooler can be a big bonus. Pre-cool the tranny fluid before it enters the radiator and heats up your coolant more. Perforating your engine cover or just leaving it off would help some, too. I've also noticed that the smaller aftermarket driving lights allow more airflow to the bottom of the rad. Little things all added together equal a slightly-larger-than-little improvement.

I have the tranny cooler also. I may have to try the smaller driving lights..

Whereabouts in Michigan are you?

Remember that it won't make a HUGE difference. Every little bit helps. (the performance of the lights is what'* a huge diff!) That Series2 SC cover is a biggie too. Have you seen the mesh mod on them? Either do that or remove it completely. It'* trapping heat on top of the SC. SC heats up, heats the coolant and block. Your coolant runs up through the lower intake, through the SC, and through the TB before going back out.

I'll have to remove the cover, I don't think I'm qualified to attempt the mesh modification. Although it looks very cool. It sucks when I have to turn off the A/C when it'* 110 outside!

Welcome to the club! Lots to choose from in terms of simple mods. Just don't go nuts all at once. Take it slow, make sure you do your homework before diving in, and have fun with it.

Welcome to the club!

Don't forget to check out the "Gatherings" section for a Michigan meet.

I posted before But did not get an answer that is the size and rpm of the rad fan because getting a diffeent fan might help I can find some if I get the info in the stock ones