I've got the K&N 66-3030 X-Stream filter, which is 5" tall, and it is
fairly close to the hood, but fits pretty well with probably 3" of clearance. SBC 350 in an 86'
https://www.knfilters.com/search/pro...x?prod=66-3030
http://67-72chevytrucks.com/vboard/a...1&d=1515867717