little update on how it does Spl wise thanks to Kushy Dreams for metering it here are some results
1 sundown audio sa-8 v.2 dual 4 wired to 2 ohms on a audioque 750.1
130.2db at 41hz sealed at the dash
also did a 128db at 51hz and 27hz.
Yup 27h kinda blew my mind it hit that low like that also from around 25-50 the sub was completely flat rising by 10th's of a db at most through out that entire range