Don't have pix.

Anyone?

Externally, they don't look much different... just a 2.4 or whatever, with an aluminum plate in place of the Stb. cyl. head to save weight and hold the water in, and only one switchbox.

Other changes are internal. PVC sleeve plugs, dummy reedcages plugged with Devcon in 1,3,5. One side of each duplex carb plugged with a soldered inlet needle seat.

Pretty heavy for a three cylinder 1.2 or 1.25, but they make good power and run well.

Strongest one I've seen is Mike's 1/2 2.5 for Formula 100. That one has special sleeves and porting, etc. and made his Mod 50 Burgess way too small. Same boat ran really well with the SST 70 2.4 version.