wanting to try some "different" subs. I've read alot of great reviews on these. Each sub will have approx. 900 watts rms. This will be a daily vehicle so tuned around 30-35hz. I do compete in db drag but mainly bass race. Vehicle will be a 2001 2 door blazer. Thanks in advance.

Go for it./

I'm looking for oppinions for box size, port area etc.??

Perhaps then asking a question would have yielded you an answer. Ellipses do not lead to questions.

Mike's recommendations are pretty spot on. For 4 of them, shoot for 12-14cuft with 100-120sqin of port. Personally I'd tune lower than you are going to as well, 28hz would be nice but you will have more output tuned higher.

maybe i should of put "I need a" in front of box design in the title...

Thanks for the feedback

Four 6 inch aeros/pvc ports would look hot, and give you your desired port area.

I wouldn't tune over 32Hz for daily. I tried a pair at 34Hz and the sound just wasn't there, sort of hollow sounding. RL-P's are excellent sounding subs in the right enclosure and 32Hz was the best mix of SQ/SPL in my application...