The MRP Trigger Adapter for 4age/7age Engines is designed to allow you to adapt their 36-1 or 24-1 trigger on your 4a/7a engine.  This kit includes a Hall Effect sensor, often needed with Stand alone ECUs. 

– Billet T6061 Aluminium Adapter Bracket
– Hall effect sensor

MRP's newly designed trigger mounts for 2019 features a fully adjustable bracket. This will cater for Singe row and Dual row pulleys.  

You will also need to use a compatible trigger wheel or instead purchase the entire kit here.