Mazworx makes an intake manifold flange, you can start there (custom). Other than that you're going to need to be able to tune the ecu I believe the 62 series ecu from the redtop sr20 can have the Alpha-N program via NISMOTRONIC hit them up. Coming from the SR20VE FWD chassis my friends opted out for bmw 50mm ITB's & custom adapted it. That's probably bare minimum sizing for a 2.0 VE & would probably be great in the long run for a DE. Runner length should be 7-9 inches. UPGRADE YOUR ROCKERS, well basically the whole valve train. Better to overbuild to have that protection. The only companies I believe that makes an off the shelf kit for a DE I believe is efi hardware, & possibly jenvey (not sure, but wouldn't be surprised if jenvey can make something). Good luck with the build
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