I have a very old speed graphic, in fact, last Nov. 10 was it's 100th birthday. I think it was once a 'Top Handle' camera because there are to holes on top that seem to have been filled. It has seen a lot of use. Where it has been, who owned it and what photos have been taken with it I will never know. I have cleaned it up. My question is: can this camera be fitted with a kalart rangefinder? Right now it is 'by guess and by god' focussing, which I am pretty good at, but I would like to have it be more precise. The camera is very light, even by speed and crown standards, and I want to use it with confidence. Thanks in advance! Robbie Bedell