Camden: The term "Cyclops" is used to describe the MTD vintage tractors that featured a distinctive "integrated" headlight at the center of the grill. You may have seen pictures of them, the units are generally considered to have carried on the tradition of IH quality and introduced some helpful innovations, like an axle design with a tighter turning radius (the so-called "Super-Steer" axle). Below is a diagram of a "cyclops" Super GT Model 2086 hood:
The Model 2086 also has the CV axle design that Joshua references:
2086 CV Driveline Components (from Parts Lookup)
Tag Part # Description
1 717-3312 Pump, Hydrostatic | For components see listing of parts under details of hydrostatic pump.
710-3120 Bolt, Hex Patch Lock, 3/8-16 x 1.5 Lg GR5
2 721-3004 GASKET
3 723-3014 FILTER-HYDRAULIC O
4 721-3005 RING-O-5/8 OD TUBE
5 727-3009 Connector, 37 Degree
6 727-3027 Tube Assy Not Available
7 710-3212 Screw, Socket Hd Cap, 1/4-20 x 2.0 Lg
8 736-0329 WASHER-LOCK
9 748-3038 Adapter, Pump Not Available
10 736-0270 Washer, Bell, .265 x .75 x .062 Thk
11 710-3220 Bolt, Hex Patch, 1/4-20 x 1.0 Lg GR5
12 748-3030A Coupling, Drive w/O-Reg Groove
13 723-3022 Ball, Steel, 5/8 Dia Chrome
14 748-3044 HUB-DRIVE
15 721-3025 O-Ring, 2.489 x .070
16 735-3029 Boot, Coupling
737-3023 Grease, CV Polyrex
17 716-0171 RING-RETAINING
18 736-0463 WASHER-FL
19 731-3095 FAN-HYDRO
20 738-3149 Shaft, Drive, 25.18 Lg Not Available
21 710-3211 Screw, Socket Hd Cap, 1/4-20 x 1.75 Lg
22 737-3000 GREASE FITTING
23 748-3037 NUT-FAN 1/4-20
24 710-1304 Screw, Flat Hd Cnt Snk, M8 x 1.25 x 55 MM Lg Not Available
25 703-2823 Plate, Coupling Adapter
Note that the dimensions of the shaft for a CV driveshaft assembly are slightly longer than those for a standard-sized Garden Tractor, like an 1864:
1864 Driveline Components
1 717-3311 Pump, Hydrostatic | For components see listing of parts under details of hydrostatic pump
710-3120 Bolt, Hex Patch Lock, 3/8-16 X 1.5 Lg GR5
2 721-3004 GASKET
3 723-3014 FILTER-HYDRAULIC O
4 721-3005 RING-O-5/8 OD TUBE
5 727-3009 Connector, 37 Degree
6 727-3027 Tube Assy Not Available
7 710-3212 Screw, Socket Hd Cap, 1/4-20 X 2.0 Lg
8 736-0329 WASHER-LOCK
9 748-3038 Adapter, Pump Not Available
10 736-0270 Washer, Bell, .265 X .75 X .062 Thk
11 710-3220 Bolt, Hex Patch, 1/4-20 X 1.0 Lg GR5
12 748-3030A Coupling, Drive w/O-Ring Groove
13 723-3022 Ball, Steel, 5/8 Dia Chrome
14 748-3044 HUB-DRIVE
15 721-3025 O-Ring, 2.489 X .070
16 735-3029 Boot, Coupling
737-3023 Grease, CV Polyrex
17 716-0171 RING-RETAINING
18 736-0463 WASHER-FL
19 731-3095 FAN-HYDRO
20 738-3098 Shaft, Drive, 20.38 Lg
21 710-3211 Screw, Socket Hd Cap, 1/4-20 X 1.75 Lg
22 737-3000 GREASE FITTING
23 748-3037 NUT-FAN 1/4-20
24 710-3258 Bolt, Hex Patch, M8-1.25 X 50 MM Not Available
25 736-3008 WASHER-FL.344
26 719-3096 Adapter, Drive Shaft
Edit: I priced an assembly for a standard tractor recently at about $400 from my local dealer, your mileage may vary.