Hello to all. New to the site and just bought my first tractor, a B7100 HST 4WD with 563 hours on it. Couple of questions: 1) Tractor is missing part# 66204-55450 which is the black box/radiator screen/"dustproof net." It's over $300 for a new one w/ mounting hardware. Fabrication ideas? Materials? 2) What about a newer model grill guard retro-fitted for the B7100? What might work? 3) More generally: A) What model# replaced the B7100? B) what model today would be most similar? C) Is the 1990ish B series the same as today's? Thanks a lot!