Sorry, but the price and availability of new ring gears is never stable. The pricing below is subject to market price of the day.  Most customer reuse their old unit. 

PART #                           PRICE                                      DESCRIPTION                                
RG105                     $232.00               Ring Gear 105 Tooth (8.671 ID) is required on all flywheels
                                                            used with 101 bell housing with mechanical release.

RG110                     $159.00               Ring Gear 110 Tooth (8.671 ID) was standard on 1750, 1968-1971
                                                            engines. Avoid using this ring gear if possible. Replace
                                                            with 130 tooth flywheel and get late model starter #0001108981
                                                            that weighs 4" Less.

RG130                     $ 99.50                Ring Gear 130 Tooth (9.050 ID) early small ID ring gear
                                                            was fitted to 1972-1974 cars. WARNING The 1975-1989
                                                            cars were fitted with 131 tooth ring gears that appear to
                                                            be the same ID but are .015" smaller. These 130 tooth
                                                            gears cannot be fitted to a 131 tooth fly wheel.

RG130L                 $196.00               Ring Gear-1 $158.50 130 Tooth large (9.948 ID) was fitted
                                                            to 1990-1994 spiders. This unit is one pound lighter than all
                                                            other ring gears. It can be used either the early Bosch
                                                            starter (72-74) PN 0001211987 or the late model (90-94)
                                                            seven pound starter. PN 0-001-108081.

RG131                     $115.00               Ring Gear 131 Tooth (9.035 ID) ring gear was fitted to
                                                            1975-1989 Spiders. requires starter # 0001108024 or 031.
                                                            WARNING. These ring gears have .015 smaller ID than
                                                            the 1972-74 130 tooth and are not interchangable.