Currently doing Dauntless engine mock up experiments into a nearly standard 3B frame. Basically I'm installing a standard Dauntless engine having rear dump exhaust manifolds. Trying out engine placement with T-15 and also with T-18 transmissions. 3B Frame modifications include: 1) Removal of Hurricane engine brackets. Will be using the standard Dauntless frame brackets removed from 1966-1971 CJ-5. 2) Removal of standard battery tray. Will be installing low mounted M38 battery tray. 3) Removal of standard pedal pivot bracket. Pedal pivot bracket is now converted over to a cast iron with bronze bushing from an M38. 4) Removal of standard single master cylinder bracket. Installed bracket and dual master cylinder from a 67-71 CJ-5. 5) Removal of steering bellcrank bracket from the front crossmember. Will be going to Saginaw manual or possibly a power Saginaw as removed from an intermediate CJ plus DJ steering column. I have a stock 3B body tub setting on the frame to check those clearances but will be changing over to a low hood body after I locate one. Body is not lifted on the frame and I prefer not to do so. Thinking about the ideal engine height underneath the low hood. Basically I'll want the engine mounted as high as it can go using a Dauntless dry type air filter. Rochester 2GC = 4" height and Dauntless air cleaner = 3-1/8" ? height. ? = modified spacer . I don't have the correct aluminum air cleaner spacer. Question: Anyone have the aluminum spacer measurement ? I need total of 7-1/8" (?) from carburetor base just to close the hood with zero hood clearance. Hood seem at center hangs down 1/2". Question: How much clearance must I have between the hood seam and the top of air cleaner ?