by Begle1 » Mon Mar 03, 2008 7:47 am
If you want one that's sealed you're looking at $200-$400 depending on size.
http://www.kbduct.com/images/parts/page24.htm
Apparently Columbus Diesel sells some particulary for the Diesel application for around $400.
http://www.cumminsforum.com/forum/89-93 ... naway.html
If you want to get creative you can get non-sealed blastgates for $20-40 and get creative sealing them up.
1990 D-250 Regular Cab: Tweaked injection pump, built transmission, a cataclysmic charlie foxtrot of electronics, the most intense street-ran water injection system in the country, and some more unique stuff.