Two BL 15s?

[dmm2005 0]

Hey I'm looking to run two Loaded BL 15s. Will these hold approx. 1700 rms each? for light daily use and some compeition use as well? Also is there a tuning frequency that I can get where they will drop hard and still be loud on about 45 hz tones for comps or do I need to just build two interchangable boxes? What size would you reccomend if I'm driving a Jeep and have a lot of room. This is a crappy first thread I know but I am looking for advice direct from the Fi experts lol.