i was think about the two and i was leaning twards the m90 because it is built for 3-5L. it all depends if i can find one at a junk yard and how much they charge.
The M90 will be difficult though, because of its rear inlet. That's gonna pose a clearance problem. I'm sure it can be worked around. Someone here had a blue early A station wagon with one, but they had to make some mods at the rear of the hood....and possibly the cowl I believe. I'll see if I can find some pictures.
