PAUL B. - Actually, I've had pretty good luck getting IH paint to shine, even rattle-can paint. I'd use POLISHING Coumpound instead of rubbing compound, finer abrasive and not as agressive, reduces the chance of going thru the color, less chance of swirl marks.
Especially on a tractor as well maintained as Sean's, there should be enough good paint under the dead surface to shine up nicely.
MATT G. - If you REALLY want to go thru the color coat you should use a power polisher. SON's '93 Lightning p/u had a frt fender replaced before he got it. The '93 L's were not clear-coated but for some reason the body shop base coat/clear-coated the passenger side fender and door when they repainted it. The hood, top of the cab, left fender etc. has been buffed, polished, rubbed, waxed clear thru the color into the e-coat primer and still won't shine. The rest of the truck actually looks pretty good for being seventeen yrs old.
DAVE R. - I went out & checked both my K181's, later vintage than a K161 from a 70 but they both have fuel pump block-off plates. Right straight down from the carb and right below the breather cover. Same plate as a K241/301/etc has. I suspect there's some later vintage K161's with them as well.