Mick,
i am back to the M1 with 825 mighty demon,has a 1" open spacer.
After looking at a tunnel ram it seems a little too hard to get a M1 ram(shorter) plus the ability to get it under the scoop.Plus the cost of getting one down here to Aus . My engine shop /dyno have suggested going to a Victor 440 which has a longer runner.i have seen the comparison tests so there does seem to be something more there.
The indy modman is on the shelf till/if i build a bigger cube or higher revving motor.
Got to thank Mick Vescio Motor Body Works for the paint job

Tex