What's with asking the questions and then ignoring the answer? You're lucky that you only lost a tire!

I didn't ask IF I COULD PULL IT I only asked what it might weigh. I knew it would be a little overweight. It was a deal where I kinda had to leave right now to go get it. The local rental store was already closed, and I don't think they allow there trailers to be pulled out of state anyway. I put heavier rated tires on my trailer last time they were replaced.
Yes it is a later engine. The original seized up one is still sitting in the corner of the garage back home. Where is the casting number on the motor??