Im a new user to this site but have been reading information for quite some time. I purchased my 91 240sx in july of 2004 and had a blacktop sr20det installed. The car is stock expect for a greddy type s bov, 2.5 inch downpipe and exhaust which is custum, and a DNA boost controler set to 12psi. im loving the cars power but definitely need more. Even though i need more power, i want to make changes to the interior. ive installed s14 front seats and reverse indiglo guages for some taste, the guages are ricey but help with vision so as long as theres a purpose, im happy. one thing that still concerns me thoughis the seatbelts. They work properly now but i have heard of an s14 conversion. could anyone help me out with install info?