is there any difrence or is it stright plug and play

 

Should be straight plub and play. Both the SI and HF have 4 injectors with resistor boxes as oppsed to the DX. You plan on swappin the tranny for the SI too?

 

yea whole complete swap

 

put the SI ecu and injectors in it you will notice a diffrence. i think i have a couple of 89 si ecus if you cant find one locally. besides thaat its pretty much plug and play. the wheel hubs on some HF are diffrent ( smaller axle hole?) and you have to use the HF axles.

 

It's a direct swap if you use the Si tranny, Si engine, Si computer, and HF axles.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tippyman &raquo;</TD></TR><TR><TD CLASS="quote">It's a direct swap if you use the Si tranny, Si engine, Si computer, and HF axles.</TD></TR></TABLE>and HF engine wiring harness

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jlicrx &raquo;</TD></TR><TR><TD CLASS="quote">and HF engine wiring harness</TD></TR></TABLE>

Well yeah, I thought that was obvious.