Connecting rods are the weak point on a stovebolt engine. If you tow it, especially if you've got pretty good traction, you'll bend or break a bunch of rods, and maybe trash the block. I use a borescope that attaches to my laptop to look inside cylinders and get an idea of just how much rust damage there is. It fits through 1/4" or smaller holes and has attachments like a mirror that can be used to look sideways after inserting the probe into a spark plug hole. They are available on Ebay for around $25.00. I wouldn't be without one!
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!