Aluminum Thermostat Housing Flange fits all S5 FC Mazda RX-7 13B water pump housings. Designed for applications where the OEM housing needs to be eliminated due to space restrictions (Large turbos, 20B swaps, V-Mount installs, etc.)

Laser cut 3/8" Aluminum with 1.5" Dia. center to accommodate 1.5" OD pipe.

S5 FC Thermostat Housing Flange

 

Very nice product...I may have to buy one. Where would I find a 1.5" pipe like that though?

 

Lots of places sell aluminum 1.5" pipe, Vibrant has a nice selection http://vibrantperformance.com/catalo...Path=1022_1072

Vibrant products are also available at Summit.