Hello ! I'm student of Rzeszow Technical University from Poland. I've to design engine mount , nacelle and main gear for project of light ( below 5.7 t ) pressurized twin engine piston similar in shape to Piper Seneca. Probably in future I'll have a task of designing pressurized cabin for the same project. I've searched the web for parts catalogs but found nothing to download

Can anybody could help me with parts catalog for Seneca II-V / Cessna 414 , 421 or any other metal light piston twin ? best regards Ericson