Need items for a D6C 74A,  I am in North Carolina
need 3 single flange bottom rollers 5M4445, 3 double flange bottom rollers 5M4444, rail with 22 inch grousers, parts book says 35 link 4M5993 link assembly with 36 grouser 1S4874,  just repairing the left side for now, or if anyone has information on other than CAT parts I would appreciate the information
just purchased this machine, left side has severe damage due to operated with busted track tensioner, had pieces welded to keep the tension in one position from the top roller support to the front idler, ran that way for a long time very loose, right side still looks very good

thank you, senior members that have a wealth of resources in the past I hope you can help on this situation also, Thank You Ricky