Russell,

    I have a HUGE Setrab cooler that I bought from Neil K. for my project. If you just want to test it before doing any drastic modifications, I'll be glad to let you borrow it for a while. It if works, you can get an identical one from them. My project is at a standstill right now, so it just laying around the shop, anyway.  Mike C. 

Thanks for the offer.  Do you know what model it is, or the actual dimensions?  I'd also be interested in knowing what model/size that David has as well.

I found the 2nd gen cooler has 7 tubes, that are 2" wide.  The Setrab tubes also look to be 2", so that makes comparisons easier.  The Mazda cooler has 7 rows, that are 19.5" long.  That gives a total tube length of 136".  

The Setrab Series 6 coolers look to have a tube length of about 9 inches.  This is sort of an estimate since they don't give that dimension.  I looked at the models ranging from 619 (series 6, 19 rows), to 660.  Here are the total tube lengths for the Setrabs:

Stock Mazda- 136"

Setrabs

619- 171"

625- 225"

634- 306"

640- 360"

650- 450"

660- 540" 

I'm leaning toward the 640 for about $300 total with AN-12 fittings.

Rusty