enclosure help

[kyle cuppett 0]

im wanting to do a build using a mach 5 audio spl 12,sundown audio saz-3000d combo

the question is ,will this be a good candidate for a mass loaded enclosure,or t box on the street.

im very impressed with what peter w. kulicki has done with two soundsplinter rl-i 8s

but i want to understand the enclosure more because id much rather build myself.