need help identifying my transfer case PLZE

[Chandlerk5]

ok so i just bought a 1986 GMC high serria k5 blazer with 37x13 boggers with no rust. was a father son project but the guys son was more interested in cocaine. he had all the body work done and new M/T rims and used boggers new lift and new warn lockout hubs also. interior in ok shape paid 1600 for it clean title. i know its a th350 trans they scarpped the 700r4 but he said he didnt know wat tansfer case it had in. shift pattern is like this (Front 4L, Neut. , 4 H Back agaist seat ) thats it for 2 high you have to unlock the hubs iam clueless on what tansfer case it has anyone wannna help? plze and thx