I'd like to put a coolant reservoir in my '73 240z but I'm having a hard time finding one that will fit. Jeff Wharton

I think MSA still has one, or you could use one like the one I got from Pegasus racing parts. It's a bit smaller and a little thicker plastic. Their web-site is www.pegasusautoracing.com.

I believe Summit Racing also sells a round catch tank too. The one from MSA I have is a bit bigger and it is rectangular and as yet I haven't put it in the car so I don't know how it will fit.

Like 2ManyZs, I have the MSA coolant reservior. Also like 2ManyZs, I haven't installed it in the car.

The "logical" location on the driver's side closest to the radiator cap is already occupied by the big Promaster ignition coil. Lots of room on the opposite side of the engine bay - probably have to relocate the voltage regulator - but it's a long tubing run and across the radiator. I'll probably wind up putting it in front of the radiator mounting panel (I know there's a proper name for the sheet metal panel across the front of the engine bay, but I don't know what it is).

If the one from Pegasus is smaller, it is probably a better choice than the big MSA unit - smaller will give you more options for a mounting spot.