Converting Italeri's OH-6A to a 500D in 1/72 scale??

Hi everyone , I was wondering if it’s possible to convert Italeri’s 1/72 scale OH-6A Cayuse, kit no.1028 to a 500D version used by the Israeli Defence Force. Italeri’s kit has an extra rotor blade on the sprue but the rotor hub only accommodates for four blades. I would also need to modify the tail to represent the large distinctive “T” tail configuration as well as blanking off the single axhaust and fitting two small exhaust cones on either side of the rear fuselage. So I was wondering if there were any conversion kits available or perhaps another type of kit I could purchase to make the conversion . Kind regards Helo 53

Get the Italeri AH-6 “Night Fox” kit. There’s a Tamiya issue of the same kit, too. Either one should be readily available online or in a better hobby shop. It’s a much better starting point for an Israeli Defender than the OH-6A kit.