Stock Paris bushings regardless of color are 88 to 90a.
2A: Replace both the front and rear base plates with Paris 43 degree ones if you want to keep it symmetrical:
Changing the base plates to 43 degrees front and back will have the familiar feel of a symmetrical setup but the handling will be more calm and less twitchy, allowing you to be a bit more stable. Turing radius will go down a bit but with the right bushings, it will still be nimble enough. 43’s have more leverage over the bushings so you will need harder or bigger ones than you are using in your 50 degree setup. At 210 lbs , 43’s front and back, I suggest KranK 93 Canons / KranK 93a Magnums front and back or APS 92.5a Canons / APS 92.5a Magnums with the Magnums boardside.
2B: Replace the rear Base plate with a 43 to create a 50/43 split setup:
Using a 50 in front and a 43 in the rear is a split setup and to balance the difference in base plate angles you need to use harder or bigger bushings in the rear than the front. For this configuration, I suggest KranK 93 Canons up front and a KranK 93a Canon / Magnum in the back or if you want APS , the same shapes but in APS 92.5a