Originally Posted by Grigg
I'd guess the clutch is 1/4" line.
Brake lines may be 5/16", but if not they'll be 1/4".

If you want easy to bend and flare lines that last near forever try some nickel copper, NAPA has this available, or you can find it cheaper on ebay.
http://agscompany.com/product-category/brake-fuel-transmission-lines/nicopp/coiled-tubing-nicopp/

Griggs had given some good info previously but I wanted to check to see if any of you knew exactly what size the brake line, fuel line, and clutch line is on this bus so I can be sure to order enough for each and not too much or too little of one size or the other. Planning on buying in bulk rolls as suggested. Didn't know if y'all knew or if the parts manual called the sizes out.