My 130 had a 5 speed box. Loads of them do.

Could be any number of reasons why it's down on power. Give it a service (including a Ford/Delphi fuel filter and not a pattern one) and see if it's any different. Get the fault codes read to see if there are any codes, and consider blanking of the EGR temporarily to see if it makes a difference.

Has it ever had replacement injectors?