Need vin# id help

Anyone know how to tell what I have by the vin mine is KZTooA-5... do I have an a1 or a2 or a2a?. Also the engine is KZTooAEo73073 How can I tell if thats what came on the bike or not. Thanks.

Here are the frame and engine number ranges for the A1, A2, A2A, B1 and B2 KZ1000 models.

Year & Model '77 KZ1000-A1
Color(s)
(1) Diamond Wine Red
(2) Diamond Sky Blue
Frame No. Range
(Japan MFR)KZTOOA000101 - 026623
(USA MFR)KZTOOA500001 - 507026
Engine No. Range
KZTOOAE000101 - 41170


Year & Model '77 KZ1000-B1:LTD
Color(s)
(1) Midnight Blue
(2) Mahogany
Frame No. Range
KZTOOB-500001 - 507530
Engine No. Range
KZTOOAE000101 - 044022

Year & Model '78 KZ1000-A2
Color(s)
(1) Luminous Green
(2) Luminous Red
Frame No. Range
(Japan MFR)KZTOOA027501 - 033450
(USA MFR)KZTOOA507027 - 515034
Engine No. Range
KZTOOAE042501 - 058140

Year & Model '78 KZ1000-A2A
Color(s)
(1) Luminous Red
(2) Ebony
Frame No. Range
(Japan MFR)KZTOOA034226 - 037430
(USA MFR)KZTOOA515035 - 519537
Engine No. Range
KZTOOAE057037 - 057066 & KZTOOAE058797 - 075473

Year & Model '78 KZ1000-B2:LTD
Color(s)
(1) Ebony
(2) Cardinal Red
Frame No. Range
KZTOOB-507531 - 515536
Engine No. Range
KZTOOAE057037 - 057066 & KZTOOAE058797 - 075473