It looks like that is the first version of the P33 which was known as the "Thoroughbred" - in its time perhaps a nice racer/cruiser, designed to sail well. Here are links to brochures and a few photos if you have not found them already:
PearsonYachts.org Pearson 33Pearson InfoDesigner Shaw Main Area 228 Hull Speed 6.81
First Year 1970 For Tri 255 SA/D 16.0
Last Year 1975 I 40.4 D/L 282
LOA 32.9 J 12.6 BR 39%
LWL 25.8 P 35.0 L/B 3.29
Beam 10.0 E 13.0 LWL /B 2.58
Disp 10,900 Eng A4 OR 22%
Draft 4/7.6 Fuel 20 CSF 1.81
Sail Area 492 Water 60 MCR 27.9
Ballast 4,200 Mast Height 44.0 M/F 0.89
PHRF 183
