I keep seeing the number $18,000,000 for the price. 6100sqft. I think it's pretty neat looking and has rather nice views around it.
http://www.kwkpromes.pl/ This is who designed the house, they've designed some other interesting houses.
M21 and M22 are basically the same with different gear ratios, except the m22 gears are cut slightly different. Not sure how much torque they can take but I wouldnt put one behind a built 540. Look into jericho/jeffco/lenco/gforce. Any of those are streetable and will take the abuse of about any 540.
But, if it was me and it was going to be a drag car I'd put an auto in it.
weber what? and on that note, edelchokes are weber designs. But each has their own advantages and disadvantages, and vinny hit the nail on the head with what he said.
http://img.eautopartscatalog.com/live/18990030WEB.JPG