Flywheels

[Blazemaster]

I have been slowly working on my 85' 300d turbo, converting it to a 4 speed as time and money allows. I have been reading about the differences between a 240d flywheel and a 300d flywheel. From what I have gathered the 300d flywheel just looks thicker, and has 10(?) more lbs to it.

I have a full machine shop in my garage, is there any reason why I can't just machine a 10lb ring and bolt it to the flywheel prior to balancing? This was just an idea I had in my head so it's not like I'm running out to go get material for this, it's more of a discussion about the topic.

I understand I can just buy a flywheel, but these kinda projects are why I have a machine shop. Also the cost of the correct flywheel is more than I paid for all the other parts of the conversion combined, 240d flywheel included.

My idea was to find someone with the 300d flywheel and get a correct weight, and size.

What are your thoughts? I searched and couldn't find another thread on this topic.