We have started the strip to repair our undercarriage gearbox on a 170A
The inboard U/C brackets will be replaced with a PPonk beefup kit.We will use P Ponk items ppa-1201and psk-1101.
We are trying to find parts for the repair and the old faithful Cessnaparts.com can't come up with some parts

We need the following assy L/H item 42 0511495-34 & R/H item 46 0511495-35. If assys for above not available breakdown of parts is (from figure20 page 34 and listing page 35 inparts manual) ;-
Cessnaparts.com has item 47 R/H -0511495-7
but not item 43 brkt L/H -0511495-6
2 x item 44 angle upper -0511495 -8
2 x item 45 angle lower -0511495- 9
The question is can we use the equivalent parts from a 180 as they look similar in the parts manual but have different parts numbers and are available. Alternative source of parts an option. HELP

Thanks you guys in anticipation
Bert