I purchased my +2 Arms for 87 250 from Metal Tech...Good guy to deal with and the fitment was great.Plus they use the OE bearings for the mounts.Give them a call...I looked and even posted in the wanted ads and couldn't find any either and was referred to Metal Tech from a member here.
Metal Tech Products
6856 W. Orangewood
Glendale, AZ 85303
(623) 915-9856