G’day again Blended,
So 4/88 and 9/89.
The 88 decal is a dead giveaway of the build year of that machine (good ‘ol bicentennial year. expo 88 too). I’m assuming it’s the machine with the 4/88 engine.
It’s a fair bet those are the original engines and probably your best indicator of the age of the second machine. Folks here suggest adding up to 6 months (maybe more) from the date of engine build when trying to estimate the age of a machine. This allows for shipping and storage of the engine before it’s use by the OEM. This suggests this machine is a very late ‘89 or early ‘90 build.
Looks like a couple of very tidy machines you’ve got there. I’m curious to see what you do with them.
Cheers,