Heres my parts list from DrATV. I think I have everything I need to complete the project here based on reading this forum and DrATV's FAQ/recommended parts. All the extras add up quick.    
--------------------------------------------------------------------------------------------- 
ATC70_&_OTHERS 120CC-4A-T-E-BOTTOM/cat 1 365.00 CHAIN_TYPE = 420_291N 
DREAM_ENGINE 
IN_STOCK_NOW!!! 
120cc_4_DOWN AUTO_CLUTCH 
ELECTRIC_START 
BOTTOM_STARTER 
SUB_WIRE_HARNESS FOR SUB-W-1.5 1 18.95 
ATC70_/_90_/_110 
CONVERSIONS (SUB-W-1.5) 
12V_or_6V CT70 REGULATOR SUB-W-12/12/6/6 1 12.99 
RECTIFIER_PIGTAIL CLICK 
FOR_INSTRUCTIONS 
(SUB_W_12/12/6/6) 
12_VOLT_BATTERY L=4_1/2" BTX4L-BS 1 44.95 
W=2_13/16" H=3_3/8" 
CT70_91_TO_94 (BTX4L_BS) 
LEFT_TURNOUT 22MM TBQ22KIT 1 32.95 
MANIFOLD_KIT 
GREAT_FOR_SWAPS 
(TBQ22KIT) 
*CLIP_FOR_OEM FUEL_LINE 22A 4 0.88 
FOR_10MM_OD 6/10A (B22A) 
*OEM_FUEL_LINE OEM_FUEL_LINE 3 2.85 
(SOLD_PER_FOOT) 
3/16_ID_10MM_OD 11/10A 
(OEM_FUEL_LINE) 
INLINE FUEL PETCOCK 34I 1 12.99 
OFF_ON_RES (34I) 
*EXHAUST_DONUT B16C 1 2.69 
ALLZ50_XR50_CRF 
ALL_PASSPORT'S CT110_ALL 
CT70_KO/82 ALL_CT200'S 
TRX90_ALL LIFANs/CLONES 
7/10C (B16C) 
START/KILL/HORN BUTTON 253T 1 9.99 
90º INLINE FUEL FILTER 707C 1 2.99 
1/4" BARBS 7/10T (707C) 
BLACK UNIVERSAL HEADLIGHT BK/UNI/HL 1 21.95 
FOR BIKES AND ATC'S 
(BK/UNI/HL) 
HEADLIGHT MOUNTING 049Y 1 14.99 
BRACKETS (sold_as_set) 
(49Y) 
THROTTLE CABLE SEE T-CABLE 1 8.95 PICK_YOUR_YEAR = 
APPLICATIONS ATC90_1973-79_(8614) 
Subtotal 561.46 
Shipping 64.34 
Tax 0.00 
Total 625.80