Ok. they finally got back to me.
They did not address my group buy question or, my four lug question but if anyone is interested here is their exact quote. Shipping will be a bit different for anyone not in MN.
Hello Chris. Thank you for the inquiry.__ Here is the quotation on the parts you want,_ <Nismo Part for Silvia S13/ 180sx>_ *002-139-001 ALLOY WHEEL LM GT4 (FRONT): 117,600 JPY (@58,800 jpy x2)_ *002-139-002 ALLOY WHEEL LM GT4 (REAR): 122,400 JPY (@61,200 jpy x2)~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~__ Sub Total: 240,000 JPY_ *Airfreight to Airport(MSP) in MN,USA: 32,100 JPY__________________ or______ to Your Doorsteps: 38,600 JPY__________ (Insurance if required: 3,000 JPY)_ *Mail Order Card Surcharge (5%):_14,479 JPY (to_MSP w/ Insurance)__________________________________________________14,821 JPY (to Door w/ Insurance)==============================================================__ Grahd Total:__289,579 JPY (to_MSP w/ Insurance)__________________ ________296,421 JPY (to Door w/ Insurance)___ You can check the approximate Currency Conversion at____________
http://www.xe.com/ucc/___ <DELIVERY TERM>________The_Bronze wheels is out of stock at Nismo this moment, it'll be middle of February to be available so that___ _we can send them to_you by the end of Feb._______ Or if you would order white ones, it's on stock, so it'll takes about 12-15 days to get to MSP or your door step.___ <TAX & DUTY>_______ Please remember you may subject tax & duty when you receive your_____ order but we do not know how much it would be.____ <HOW TO ORDER>_________ Please visit our site(about payment) at_________________
http://www.japanparts.com/Howtoorder.htm________ and fill out our Secure Server Order Form at_______________
https://www.japanvehicles.com/....html____ Many Thanks,_ TOKYO_ GRAHAM MOTORS(japanparts.com)_ Kanako