Maybe:
http://www.competitionplus.com/drag...discuss-nhra-letter-addressing-plans-for-2019
Yes to first step:
The top opening may not exceed 10.00 inches in length or 4.600 inches in width. Supercharger inserts must be manufactured per NHRA specifications. Supercharger dividers prohibited.
http://promod.nhra.com/userfiles/file/Tech/NHRA Standardized 45 degree Insert.pdf
http://www.competitionplus.com/drag...discuss-nhra-letter-addressing-plans-for-2019
Yes to first step:
The top opening may not exceed 10.00 inches in length or 4.600 inches in width. Supercharger inserts must be manufactured per NHRA specifications. Supercharger dividers prohibited.
http://promod.nhra.com/userfiles/file/Tech/NHRA Standardized 45 degree Insert.pdf