I bought my rollmaster from a mustang shop that is gone now, but I did find several places that list the rollmaster part number, but few places have price lists.
Here is a quote from
http://www.bluethunderauto.com/
Timing chain sets are "Rollmaster" billet steel C.N.C. machined in Australia, with 9 key-ways for ease of cam timing. Chain is seamless full roller type "IWIS" chain from Germany. Available in 25+ applications for American engines including availability of (at extra cost) small block and big block Chev. chain sets with an incapsulated Torrington thrust bearing already installed, which requires no machining to install.
Here are the part numbers of interest, I'm not sure which one is right.
Ford Windsor 225-289-302/302 Boss 351 Boss ............................. CS8289-351W
Ford Cleveland 302C-351C-351M-400M ...................................... CS83051C
Ford Big block 429-460 .................................................................. CS842960
Ford FE 352-360-390-410-427-428 .............................................. CS8352428
Ford Windsor HO Factory HYD roller cam with serpentine belt ........ CS8302 HO
Ford Boss 302 SVO Cleveland ....................................................... CS1024
Ford EA & later OHC 6 cyl three sprocket set ................................ CS1025
Ford Windsor HO Balanced cam sprocket set roller cam ................. CS8302 HO C/W
Ford Windsor HO 4140 Heat treated crank sprocket set ................. CS8302 HO4140
Ford Windsor 4140 Heat treated crank sprocket set 289-302 .......... FW/4040
Ford Windsor pre 1965 no boss on rear of cam sprocket 260 .......... CS1029
I forgot that your engine is still in your car. I changed my pan gasket while my engine was hanging from a hoist. Also it was a front sump 289 in a '65, so it's 95% the same on the engine side and totally different on the chassis side.