Problem with fuel injector nozzle model [Jimny M13A 2000]

I have a 2000/2001 Jimny M13A - SN413V and I have a problem I can't solve: the fuel injectors are purple Denso injectors with code 3980, smaller than usual, even though the original code is 15710-80G00. I bought new injectors, but they are a little longer than the ones in the car and I can't find replacements to buy.

The image below shows this difference. On the left is the original injector from my vehicle and on the right is what should be the new replacement, but it is longer. The injectors are bad and I need to replace them. I even bought another fuel rail of a newer Jimny model, but using the new or old fuel rail, it was the same, fuel leaked. (they seem tight or out of position). 
What should I do? Please help me.
 

First question - are you sure your vehicle is an SN413V?
Second question - where/how did you get the part number?

Looking at Suzuki's WWEPC, an SN413V would/should have a G-series engine, not an M-series, and the part number for the injector is different.

The shorter injector Does not look like a G16 injector. Havent seen the G13 ones, sorry.
Edit : google says your injector on the left is a G13 

The longer New one look like a m13 and other m-series injector.

Picture of your engine would be nice now.

Believe me, my vehicle has an M13A engine. It has a license plate, labels, the VIN code confirms it, and the frame is from this series. I know how to differentiate the engines. My vehicle is an SN413V TYPE2 according to VIN research, JLX. What I've noticed is that searching for photos of my original injector, there are very few available, it seems like a rare find. I've concluded that it seems to be a limited transitional model for the Jimny. The injectors that appear identical to mine refer to Ignis, as below: izap24.ru/tovar/31784223_forsunka-topliv...-2001-150323980.html

the original injectors are bad but not leaking or both new and old are leaking?

The old fuel injectors that came with the vehicle are outdated and I haven't had them for years. At the time, I managed to find the only compatible size, a shorter one, part number 15710-52G00, which is for a Suzuki Metro or Swift, if I'm not mistaken. However, I'm having problems (high injection time around 3.7 to 4.0ms) that indicate the injectors are the issue; they don't even seem to have the same parameters as the original (flow rate), so I need to replace them.