Got all four lights behind the grill!

Nice

 

Cant help with four, but I had 2 hella's 6" behind my grill in the texas summer and never an issue with overheating or anything close, so good luck, i want to put 2 6"'s back in there with 2 smaller, possibly 4"max amber lights soon.

 

Well I just did a three and ahalf hour trip with the lights like this in 65 degree weather and my stock grill with my rpms around 3 grand and it did fine the whole way. I think it will ok in the summer

 

Sounds good man! Yeah it's getting air from underneath too so you should be good-plus if the temp does act up you can alway stop and remove a couple real quick